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Finding the Fourth Proportional to 15,971.52, 22,040.73 and 8,898.20

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Solution

The fourth proportional to 15,971.52, 22,040.73 and 8,898.20 is: 12,279.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,971.52 : 22,040.73 = 8,898.20 : x
  2. Step 2: Convert to fraction form
    15,971.52/22,040.73 = 8,898.20/x
  3. Step 3: Cross multiply
    15,971.52x = 22,040.73 × 8,898.20
  4. Step 4: Simplify right side
    15,971.52x = 196,122,713.48
  5. Step 5: Solve for x
    x = 196,122,713.48/15,971.52
  6. Step 6: Final answer
    x = 12,279.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.